Received a call from this number and person refused to tell me what the call was in reference to.

Same thing happened to me today. He was asking for someone named Nicole.

I've received a call from this number as well as a second similar number (423-274-3498).  Both introduced themselves as Mrs. Walker or Mr. McLain.  If that's not suspicious, I don't know what is.

They didn't ask for anyone specific but said it was in reference to a debt.  Well this can't be true either because neither my wife nor I owe on anything. So this must be a scam for stupid people.

This is the 2nd call I've gotten in as many months.  One on Dec 6th.  And one on Jan 6th.

Just got a call from a Mr Stein at this number. Said it was important to call back, but left no real info. He rattled off a number to return the call to, but I'm not wasting any time with them

Left message saying it was in regard to a debt.  I do not owe anything